Approaching the Thermostability Limit of Nitrogen-Rich Heterocyclic Perchlorate-Based Energetic Materials

In recent years, driven by ever-increasing application
of energetic
materials in deep-seated mineral resource exploitation and aerospace
engineering, the mining of advanced safe energetic materials with
significant thermal stability has drawn widespread publicity. Here,
a tricyclic bridged energetic compound 2-amino-4,6-bis(3,5-diamino-4-nitropyrazol-1-yl)-1,3,5-triazine
(NPX-03) was prepared using simple synthetic route. Furthermore,
an interesting highly thermostable nitrogen-rich perchlorate, NPX-03·2HClO4, was prepared by
the self-assembly reaction of NPX-03 and HClO4, displaying a thermal decomposition peak temperature of 375.9 °C.
Moreover, NPX-03·2HClO4 exhibits
good detonation velocity (D = 8187 m s–1) and insensitivity (IS = 50 J, FS > 360 N), thereby being promising
candidates for advanced insensitive high-energy materials.